Download or read book Times Gone By written by Vicente Pérez Rosales and published by Oxford University Press. This book was released on 2003-05-01 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: These memoirs trace the wild and adventurous life of Pérez Rosales from his childhood up to the 1860s. During that approximately half-century he saw and did more than a dozen ordinary men. At age eleven in Argentina he witnessed the executions of Luis and Juan Jose Carrera. From there, his activities and adventures took him on several journeys on sailing vessels around Cape Horn; to Paris, where he witnessed the July revolution of 1830; to various commercial endeavors including a distillery, the practice of medicine, and cattle smuggling; into service as an advisor to an Argentine warlord; as a miner for precious metals in the north of Chile; as participant in the California Gold Rush in 1849; as director of the government's project for German immigration and settlement in the wild south of Chile; and also as Chilean consul and immigration agent in Hamburg. Around the world, Rosales lived through many of his era's watershed moments. His exciting memoirs offer a chance to relive the rush and chaos of these times--from a much safer vantage.

Download or read book Humedales para Tratamiento written by Gabriela Dotro and published by IWA Publishing. This book was released on 2021-02-15 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humedales para tratamiento es el séptimo volumen de la serie “Tratamiento biológico de aguas residuales” (en inglés “Biological Waste Water Treatment Series”), que provee una presentación de vanguardia sobre la ciencia y tecnología del tratamiento de aguas residuales. Los principales tipos de sistemas de humedales son tratados en este volumen, a saber: (i) Humedales de flujo subsuperficial horizontal, (ii) Humedales de flujo vertical; (iii) Humedales de flujo vertical tipo francés; (iv) Humedales intensificados; (v) Humedales de flujo libre; (vi) otras aplicaciones de los humedales para tratamiento. El libro presenta en forma clara y didáctica, los conceptos básicos, los principios de la tecnología, desempeños esperados, criterios de diseño, ejemplos de diseño, aspectos constructivos y guías para la operación. El libro ha sido escrito en su versión inglesa, y traducido al castellano, por un equipo internacional de expertos en el campo de los humedales para tratamiento.

Download or read book Pigs Peccaries and Hippos written by William Oliver and published by . This book was released on 1993 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plowman s Folly written by Edward H. Faulkner and published by University of Oklahoma Press. This book was released on 2015-01-06 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mr. Faulkner’s masterpiece is recognized as the most important challenge to agricultural orthodoxy that has been advanced in this century. Its new philosophy of the soil, based on proven principles and completely opposed to age-old concepts, has had a strong impact upon theories of cultivation around the world. It was on July 5, 1943, when Plowman’s Folly was first issued, that the author startled a lethargic public, long bemused by the apparently insoluble problem of soil depletion, by saying, simply, “The fact is that no one has ever advanced a scientific reason for plowing.” With the key sentence, he opened a new era.For generations, our reasoning about the management of the soil has rested upon the use of the moldboard plow. Mr. Faulkner proved rather conclusively that soil impoverishment, erosion, decreasing crop yields, and many of the adverse effects following droughts or periods of excessive rainfall could be traced directly to the practice of plowing natural fertilizers deep into the soil. Through his own test-plot and field-scale experiments, in which he prepared the soil with a disk harrow, in emulation of nature’s way on the forest floor and in the natural meadow, by incorporating green manures into its surface, he transformed ordinary, even inferior, soils into extremely productive, high-yield croplands.Time magazine called this concept “one of the most revolutionary ideas in agriculture history.” The volume is being made available again not only because farmers, ranchers, gardeners, and agriculturists demanded it, but also because it details the kind of “revolution” which will aid those searching for the fruits of the earth in the emerging nations.

Download or read book La erosi n h drica del suelo en cultivos agr colas written by José de Jesus Huerta O. and published by Editorial Academica Espanola. This book was released on 2015-01-19 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: En la presente obra se expone el efecto reductor de la cobertura vegetal y de raices de cultivos agricolas (maiz, frijol, calabacita y avena) sobre el proceso erosivo del suelo y agua en parcelas experimentales de temporal. En estas fue considerado el manejo convencional de suelo y la preparacion del terreno para la siembra bajo lluvia simulada. Los resultados obtenidos confirman una relacion exponencial negativa entre la cobertura vegetal y la perdida de suelo; observandose que el efecto de raices es menos eficiente para reducir el proceso erosivo. Los mayores registros de perdida de suelo promedio fueron obtenidos en el cultivo de maiz y los menores para avena. Todos los cultivos mostraron una relacion negativa del escurrimiento superficial con respecto al aumento de cobertura vegetal; a diferencia del desarrollo de las raices, del que solamente el maiz mostro un ligero efecto en reducir el escurrimiento superficial.

Download or read book Pedodiversity written by Juan José Ibáñez and published by CRC Press. This book was released on 2013-04-08 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil diversity (pedodiversity) is part of our natural and cultural heritage. The preservation of the pedosphere is essential for the protection of the biosphere and the Earth's systems, the regulation of climate, and for world food security. In this book, reputed international experts discuss the state of the art of pedodiversity analysis-analyzing

Download or read book Primate Diversity written by Dean Falk and published by W. W. Norton. This book was released on 2000 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: Primate Diversity successfully synthesizes a thorough look at current primatology research while providing a careful examination of a variety of species.

Download or read book Conservation Agriculture written by Ram A. Jat and published by CABI. This book was released on 2013-12-13 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book covers the spread of conservation agriculture (CA) to regions including Brazil, Argentina, Canada, Australia, Europe and emerging CA destinations in Asia and Africa. ÿTopics covered include the various components of CA, and how their individual and combined implementation influence productivity, soil health and environmental quality under diverse edaphic and climatic conditions. The book will be useful to teachers, researchers, extensionists, farmers, and students interested in environmental quality.

Download or read book Mitigating Land Degradation and Improving Livelihoods written by Feras Ziadat and published by Routledge. This book was released on 2015-07-16 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research presented in this book demonstrates how an integrated ‘systems’ approach to farming in the watershed context increases the effectiveness of a production system and improves people’s livelihoods. It takes an integrated approach, using one watershed in Ethiopia as a ‘laboratory’ or model case study to focus on the interaction and interdependence between land, water, crops, soil, water harvesting, supplemental irrigation, forestry, socio-economic aspects, livestock and farm tools. A range of linked studies was conducted with active participation of the farming community and other relevant stakeholders, such as the local offices of agriculture and extension services. The starting point for the work was the premise that previous efforts to solve farming system constraints using a piecemeal approach or discipline-specific focus have not been successful. Thus, addressing agricultural and environmental constraints through a holistic approach enables the generation of comprehensive technologies to sustainably improve the natural resource base and livelihoods of communities. The authors discuss trade-offs and resource allocation, demonstrating how the environment can be protected while also improving productivity. A unique feature is the methodology developed for the selection of suitable fields and farmers to implement new approaches or improved technologies, to achieve production increases while reducing degradation of sensitive agro-ecosystems. It is also shown how the watershed scale is a valuable basis for assessing the protection of fragile lands.

Download or read book Erosi n y conservaci n del suelo written by R. P.C. MORGAN and published by Mundi-Prensa Libros. This book was released on 1997-10 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Food and Agricultural Security written by Thomas W. Frazier and published by . This book was released on 1999 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers in this volume address issues concerning the possibility of bioterrorism against agricultural crops and domestic animals. Papers present a dialogue between industry and government concerning defence of these vulnerable resources.